|
|||||
|
|
| 黄土坡面土壤侵蚀动态变化过程试验研究 | |
| 引用本文： | 高素娟,王占礼,黄明斌,张宽地,刘俊娥,袁殷,陈浩.黄土坡面土壤侵蚀动态变化过程试验研究[J].水土保持通报,2010,30(1):63-68. |
| 作者姓名： | 高素娟 王占礼 黄明斌 张宽地 刘俊娥 袁殷 陈浩 |
| 作者单位： | 1. 西北农林科技大学,资源环境学院,陕西,杨凌,712100 2. 西北农林科技大学,资源环境学院,陕西,杨凌,712100;中国科学院,水利部,水土保持研究所,黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西,杨凌,712100 3. 西北农林科技大学,水利与建筑工程学院,陕西,杨凌,712100 |
| 基金项目： | 国家自然科学基金项目，国家973计划课题，中国科学院知识创新工程重要方向项目课题，黄土高原土壤侵蚀与旱地农业国家重点实验室自主研究课题，西北农林科技大学创新团队建设计划 |
| 摘 要： | 采用人工模拟降雨试验的方法对黄土坡面土壤侵蚀动态变化过程进行了研究.(1)不同雨强条件下,土壤侵蚀强度随降雨过程的动态变化趋势基本一致,整体皆随降雨历时的增长而递增,并皆可用对数线性组合方程很好地描述.开始降雨后的15 min和35 min是侵蚀强度随降雨过程变化的转折点;(2)不同坡度条件下,土壤侵蚀强度皆随雨强的增大而迅速增大,变化趋势基本一致,可用线性方程很好地描述;(3)不同雨强条件下,土壤侵蚀强度随坡度的增加表现为先增大后减小的趋势,可用对数线性组合方程很好地描述,25°左右是侵蚀强度发生变化的临界坡度;(4)不同雨强条件下,土壤侵蚀强度随坡长的增加整体表现为先增大后减小的趋势,可用对数线性组合方程很好地描述,坡长80 cm左右是侵蚀强度发生变化的转折点;(5)土壤侵蚀强度随雨强、坡度、坡长的动态变化可用三元线性方程描述,雨强对土壤侵蚀的影响远超过坡度与坡长,且坡度与侵蚀强度的关系较坡长为密切. |
| 关 键 词： | 黄土坡面 土壤侵蚀 动态变化过程 降雨强度 坡度 坡长 |
| 收稿时间： | 2009/6/14 0:00:00 |
| 修稿时间： | 2009/10/11 0:00:00 |
Experiment Study of Soil Erosion Dynamic Processes on Loess Slope |
|
| GAO Su-juan,WANG Zhan-li,HUANG Ming-bin,ZHANG Kuan-di,LIU Jun-e,YUAN Yin and CHEN Hao.Experiment Study of Soil Erosion Dynamic Processes on Loess Slope[J].Bulletin of Soil and Water Conservation,2010,30(1):63-68. | |
| Authors: | GAO Su-juan WANG Zhan-li HUANG Ming-bin ZHANG Kuan-di LIU Jun-e YUAN Yin and CHEN Hao |
| Institution: | GAO Su-juan1,WANG Zhan-li1,2,HUANG Ming-bin1,ZHANG Kuan-di3,LIU Jun-e1,YUAN Yin1,CHEN Hao1 (1.College of Resources , Environment,Northwest A & F University,Yangling,Shaanxi 712100,China,2.The State Key Laboratory of Soil Erosion , Dryl, Farming on the Loess Plateau,Institute of Soil , Water Conservation,Chinese Academy of Sciences , Ministry of Water Resources,3.College of Water Conservancy , Architectural Engineering,Shaanxi 71... |
| Abstract: | Based on simulated rainfall experiment,the processes of soil erosion dynamic variation on the loess hillslope were studied and the following results were obtained:(1) Soil erosion rate was increased with rainfall process under different rainfall intensities and it could be described with a logarithmic and linear combined equation.15 min and 35 min after rainfall beginning were the turning points of soil erosion rate with rainfall process.(2) Soil erosion rate was increased rapidly with the increase of rainf... |
| Keywords: | loess hillslope soil erosion dynamic variation process rainfall intensity slope gradient slope length |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |
| 点击此处可从《水土保持通报》浏览原始摘要信息 | |
| 点击此处可从《水土保持通报》下载免费的PDF全文 | |